Is it possible to get additional performance from a 1.4 mk 4 Golf short of replacing it with a GTI?

I know that I could strap a extra large can on the back and a new air filter to improve the car's "breathing" but that isnt really a performance modification because the benefits are negligible (3-4 bhp if that). Am I correct in thinking this?

I'm not really thinking of improving the performance but for talking's sake.

Thanks!

You could always upgrade the 1.4 to a Polo GTI engine. It's the same unit, but at 1.6 liters it develops 125 hp.

__________________
If you have a 5 cylinder, you don't need a stereo.

1999 Audi A6 quattro
1990 Volkswagen Golf CL Syncro
1987 Audi Coupe quattro